Railway-frog.



J. V. STEWART.

RAILWAY FROG.

APPLICATION FILED JAN. 5, 1912.

1,074,331 Patented Sept. 30, 1913.

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'UNTTED STATES PATENT OFICE.

' JOHN STEWART, F JOHNSTOWN, PENNSYLVANIA, ASSIGNOR T0 THE LORAIN STEEL COMPANY, OF JOHNSTOWN, PENNSYLVANIA, A. CORPORATION OF PEN NSYL- VANIA.

Specification of Letters Patent.

RAILWAY-FROG.

Patented Sept. so, 1913.

' To all whom it may concern Be it known that I, JOHN V. STEWART, a citizen of the United States, residing at Johnstown, in the county of Cambria and State of Pennsylvania, have invented a new and useful Railway-Frog, of which the followingis a specification.

.My invention relates to railway frogs employed in the construction of railway tracks and turnouts, and more particularly relates to the construction of railway frogs having frog points or frog blocks with wearing surfaces formed of-an alloy of manganese steel.

Qne object of my invention is to provide a railway frog of simplified construction in which the number of parts forming the frog construction is lessened or reduced.

Another object of the invention is to provide a railway frog structure having novel means whereby the use of separate filler blocks is avoided, the rigidity of the frog structure is thereby increased, the life of the wearing parts of the frog is lengthened, and a frog of greater strength is obtained.

A further object of this invention isto provide a railway frog structure in which "the amount of machining-necessary-in constructing the frog is lessened and reduced to a minimum and a frog structure formed entirely of manganese steel is obtained.

Other objects of my invention will appear as is more fully described hereinafter. Referring to the accompanying drawings forming part of this specification, Figure 1 is a plan showing a frog structure constructed and arranged in accordance with my invention. Fig. 2 is a plan on a larger scale showing the integrally formed manganese steel frog point casting. Fig. 3 is a plan of a chock used in forming my improved frog structure. Fig. 4 is a transverse section on the line IV-IV of Fig. 1 showing the manner-in which the chock is secured in position between the wing rails of the frog structure. Fig. 5 is a transverse section taken on the line VV of Fig. 1 showing the wing'rails and frog point in assembled relation. Figs. 6, 7 and 8 are similar transverse sections taken respectively on the lines VIVI, VIIVII, and

point. The heel or rear end of the frog point is bifurcated and the cross section of these bifurcated portions 5, 5, has the same contour in cross section as the track rails to which they are secured when the frog is in use. The. under surface of the frog point has cored recesses formed therein to lessen the'weight of the casting.

Secured to the frog point by bolts 6, 7, 8, 9 and 10, are the wing rails 11 of the frog, these wing rails being bent in the usual manner and being formed of rolled manganese steel. Registering openings or holes are provided'in' the web of the wing rails and in the cast frog point through which these'bolts extend in securing the parts together. A- chock 12 is secured between the wing rails in front of the toe of the frog point by means of the bolt 13. Bolt holes spaced at suitable intervals are provided in the web of the wing rails and in the web portion of the rear end of the frog point through which bolts extend in securing the splice bars thereto by which the frog is attached to the track rails of a railway track to which the frog is applied for use.

The advantages of my invention will be apparent to those skilled in the art. By employing a manganese steel casting to form the frog point and by employing rolled manganese steel rails to form the wing rails of the frog structure, a frog having integral manganese steel wearing surfaces is provided, the necessity of using manganese steel inserts is avoided and the difliculties met in securing and maintaining such inserts in place are overcome.

By forming the frog in one piece and machining the side edges thereof to fit between the adjacent faces of the head and flange portions of the wing rails, the use of filler blocks is avoided, the number of pieces necessary in forming the frog structure is lessened, and the amount of machining necthe wing rails andfrog point are .secured in gends of the wing rails and having the i- 5 frog point, the rear of the frogpoin't being essary in forming a built-up railway frog is reduced. The wing rails are rigidly secureduin close contactvwith the engaging surfaces of the integrally formed frog point, and a railway frog structure of greatly increased strength is afforded.

Modifications in the construction and arrangementof the parts may be made without departing from my invention. i The siz e and 1 shape of the cored openings in the frog, point may be varied and other changes may be made within the scope of my inventionas defined in the appendedclaims.

1. railway frogcomprising in combina tion an integrally formed manganese-steel frog point, wing rails formed of manganese steel, said frog point having integralv side portions in interfittingengagement with the sides ofthelwing rails, and means whereby assembledrelation, the rear endof the frog point being bifurcated and the bifurcated portions, extending rearwardly beyond the sectional contour of the track rails to which the frog structure is attached When in use, i

2., A frog comprising ingjombination an integrally formed manganese-steel tetieid og PQ .lmf i g int gral s e per ns nr n e ti e g m n w th the sides'of thewing rails, and means whereby the wing rails are secured directly to the bifurcated and the bifurcated portions ex ll l li tending rearwardly beyond the ends of the 7 wing rails and having-the cross sectional contour of thetrack rails tQ'WhlGh the frog structure is attached wheninuser 3. A railway frog comprisingincombiner tion an integrally formed manganese-steel frog point, wing rails formed of rolled manganese-steel and extending rearwardly ;beyond the ends oiqthe wing rails, said frog point having integral side portions in interfitting engagement with the sides of the wing rails, and means whereby the Wing railsandfrog pointare secured in assembled relation, the ends'of thefwing rails and frog point having the contour of'and abutting the ends of the track rails towhichthe frogst-ructure is secureduwhen in nse.

a 4. Agailway frog comprising in combination an integrally formed manganese-steel frogpoinnwing railsformed ofrolled man- 'ganese-steeh and extendlng rearwardly beyo'nd the ends of ,the ,wing rails said frog point having integral side portions in inter V fitting engagement with the sides oi the Wing rails, and means whereby" the Wing rails aresecuredidirectly to the frog point,-

theiends of the Wing rails and frog point having the contour of and abutting the ends of the track rails to which the frog structure i sec re Wh in us I Intestimony whereof, I have hereunto set my hand. 7 V JOHN; V, STEWART. Witnesses: v v

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